47615221 has 8 divisors (see below), whose sum is σ = 50079744. Its totient is φ = 45183600.

The previous prime is 47615209. The next prime is 47615231. The reversal of 47615221 is 12251674.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47615221 - 2¹¹ = 47613173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47615221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47615231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5230 + ... + 11071.

It is an arithmetic number, because the mean of its divisors is an integer number (6259968).

Almost surely, 2^47615221 is an apocalyptic number.

It is an amenable number.

47615221 is a deficient number, since it is larger than the sum of its proper divisors (2464523).

47615221 is a wasteful number, since it uses less digits than its factorization.

47615221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16451.

The product of its digits is 3360, while the sum is 28.

The square root of 47615221 is about 6900.3783229617. The cubic root of 47615221 is about 362.4504150965.

Adding to 47615221 its reverse (12251674), we get a palindrome (59866895).

The spelling of 47615221 in words is "forty-seven million, six hundred fifteen thousand, two hundred twenty-one".